Photos: Wango Tango 2016: Ariana Grande, Meghan Trainor and more

Fans bring out their cellphones and illuminate the arena as the Chainsmokers perform.

Gwen Stefani prepares to perform as the stage rotates into position at Wango Tango.

A fan records Fifth Harmony’s performance on a cellphone.

Ariana Grande headlines Wango Tango in Carson.

Daya performs at Wango Tango.

Gwen Stefani works the crowd at Wango Tango.

Meghan Trainor performs at Wango Tango.

Fans light up their cellphones during the Chainsmokers’ set.